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Dynamically self-adjustable liquid-liquid and self-adaptive softcontact solid-solid triboelectric nanogenerator for wave energy harvesting

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Nano Research 2025年第1期18卷 404-414页

作者： Yong long Bingqi Zhao jianan Niu Yuxiu l.u Wei Sha Jiangwen Wang Zhong lin Wang Weiguo Hu Guangzhou Institute of Blue Energy Knowledge CityHuangpu DistrictGuangzhou 510555China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China

Water wave energy exhibits great potential toalleviate the global energy crisis. However, harvesting andutilizing wave energy are challenging due to its irregularity,randomness, and low frequency. Triboelectric nanogenerators(TENGs) have gained significant attention for harvesting waveenergy with high efficiency. This study presents a novelellipsoidal, pendulum-like TENG integrating both liquid-liquid(l-l) and solid-solid (S-S) triboelectricity (lS-TENG). Thisinnovative design enables continuous wave energy harvestingand self-powered marine environment monitoring under variousconditions, including temperature, humidity, and light intensity. The binary immiscible liquids within the lS-TENG’s innersoft balloon create dynamic, and self-adjustable l-l contact interfaces, significantly increasing the l-l contact area andenhancing l-l contact electrification (CE). The unique self-adaptive, soft S-S contact increases the S-S contact areacompared to traditional hard point contact, better adapting to the irregular movements of waves and promoting efficient S-SCE. The lS-TENG achieves highly efficient wave energy harvesting by coupling l-l and S-S CE. Furthermore, the uniquesoft contact design protects the S-S interfaces from mechanical wear and damage during long-term work. The lS-TENG’snovel structure provides an innovative and effective way for water wave energy harvesting.

关键词： self-adaptive soft-contact solid-solid liquid-liquid self-adjustable triboelectric nanogenerator

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Noncoding RNAs：＇our turn＇ to join the p53 networ

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Journal of Molecular Cell Biology 2014年第3期8卷 179-180页

作者： Yong li Hua l.u Department of Biochemistry and Molecular Biology School of Medicine University of Louisville 319 Abraham Flexner Way Louisville KY40202 USA E-mail: yong.ti@louisviUe.edu Department of Biochemistry& Molecular Biology andTulane Cancer Center TulaneUniversity School ofMedicine New Orleans LA70112 USA

The p53 tumor suppressor is the guardian of the rrr- o human genome. Since ,ts discovery in pS3 has been the most studied molecule in the field of cancer. Recently, its role has also been extended to other biological and pathological processes, p53 functions primarily as a transcription factor to regulate target genes that encode proteins crucial for promot- ing apoptotic cell death, cell cycle arrest, senescence, and so on in response to diverse upstream stressors. Interestingly, some of the p53 targets are noncoding RNAs. Noncoding RNAs can be functional without being translated into proteins and are often independent RNA molecules or noncoding parts of messenger RNAs. The past decade has witnessed bur- geoning intensive investigation on the interplay of noncoding RNAs with p53, its regulators, and effectors during the development of cancer and/or other dis- eases. This issue of Journal of Molecular Cell Biology presents five essays to review the rapid progress in this area from five different angles and to offer new insight into the role of noncoding RNAs in the p53 signaling web with updated information.

关键词：非编码RNA BP网络分子细胞生物学 P53 编码蛋白质细胞周期阻滞 p53 人类基因组

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Childhood malaria in the Niger delta area of Nigeria:mothers/care givers'perception,definition and treatment practices

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Asian Pacific Journal of Tropical Medicine 2009年第3期2卷 52-58页

作者： Idogun E.Sylvester Airauhi l.u Department of Chemical Pathology University of Benin Teaching HospitalBenin City Department of Medical Microbiology Biology University of Benin Teaching HospitalBenin City

Objective:The objective of the study was to evaluate mothers/care givers perception of malaria,their treatment practices and the effects on the outcome of ***:Four hundred and sixty children were enrolled and their mothers/care givers *** children were screened for malaria parasitaemia and there after,blood specimens were obtained for biochemical and haematological evaluation from those children who met the criteria and tested positive to *** *** cell volume,electrolytes,urea, creatinine,plasma glucose,and serum bilirubin were ***:A total of 460 children were studied, 233(50.7%) males and 227(49.3%) *** malaria cases were 112(24.3%) and severe malaria 348(75.7%).Those who presented early 106(23.0%) and those who presented late 354(77.0%).Perception and definition of malaria as well as the treatment seeking behaviors vary significantly with the level of education of the mothers and care *** without formal education 68(51.9%) wrongly perceived that the etiology of malaria can only be diagnosed by native doctors compared to those with primary six education 61 (26.5%) and junior secondary education 10(10.1%).Only 43(9.3%) gave the correct dose of chloroquine syrup to their sick children,while 32(7.0%) gave at sub optimal ***:Wrong perception of malaria especially the complicated malaria and wrong treatment practices are major contributory factors to the high mortality and morbidity of malaria in *** is therefore a need for health education to correct the wrong ideas about the cause and treatment practices of malaria as part of malaria control programme.

关键词： Childhood malaria Mothers/Caregivers Perception and treatment practices Nigeria

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Progress and trends in hydrate based desalination(HBD) technology:A review

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Chinese Journal of Chemical Engineering 2019年第9期27卷 2037-2043页

作者： jianan Zheng Fanbao Cheng Yuanping li Xin lü Mingjun Yang Key laboratory of Ocean Energy utilization and Energy Conservation of Ministry of Education Dalian University of TechnologyDalian 116024China Institute of Science and Technology Shenzhen BranchChina National Offshore Oil CorporationGuangzhou 510420China CNOOC Research Institute Co.ltd. Beijing 100027China

The shortage of freshwater boosts the development of seawater desalination technology. As a novel method, the hydrate based desalination technology has been put forward for decades and achieved considerable development in the past years. This review focuses on the experimental progress at the aspects of the hydrate former choice, formation promotion and ion removal efficiency and conceptive innovation of hydrate separation and energy utilization. It should be noted that gaseous hydrate former with low formation pressure and insoluble liquid hydrate former are worthy for further study. Besides, the water migration caused by propane deserves to be investigated much more deeply for the potential value of wide application. Moreover, the utilization proposal of lNG cold energy brings more possibility of commercial application. In a word, the hydrate based desalination technology is hopefully an environment friendly, low-cost and widely used desalination technology in the near future.

关键词： Gas hydrate Desalination Separation Phase equilibria Hydrocarbons Mixture

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Electric field control by permittivity functionally graded and superficially non-linear conductivity materials for DC-GIS spacer

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High Voltage 2022年第5期7卷 992-1000页

作者： Boxue Du jianan Dong Hucheng liang School of Electrical and Information Engineering Tianjin UniversityTianjinChina

This paper offers a simulation study on the application of a novel approach to control the electric field around a basin-type spacer by combining permittivity functionally graded materials(ε-FGM)and superficially non-linear conductivity materials(SNCM),namely multi-dimensional functional materials(MDFM).The permittivity distribution of theε-FGM spacer is designed by the iteration optimization algorithm,and the epoxy/SiC composites with 30 and 60 phr doping contents are assigned as the coating materials of two SNCM spacers,namely SNCM30 and *** MDFM spacer combinesε-FGM in its bulk and SNCM60 on its *** electric field regulation effect of each functional spacer is investigated under variable conditions,that is,DC steady state(DC-steady),DC turn-on state(DC-on),DC polarity reversal(DC-PR),and DC superimposed with switching impulse voltage(DC-SI).Results show that the applicability ofε-FGM and SNCM is limited to transient and stationary conditions,*** MDFM spacer combines the advantages ofε-FGM and SNCM for adaptively relaxing the electric field under all the above *** is hoped that this research will be beneficial to the development and application of spacers for the direct current gas-insulated switchgear(DC-GIS).

关键词： composites graded field

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Recent Progress on Two-Dimensional Nanoflake Ensembles for Energy Storage Applications

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Nano-Micro letters 2018年第4期10卷 122-151页

作者： Huicong Xia Qun Xu jianan Zhang College of Materials Science and Engineering Zhengzhou University

The rational design and synthesis of two-dimensional(2D) nanoflake ensemble-based materials have garnered great attention owing to the properties of the components of these materials, such as high mechanical flexibility, high specific surface area, numerous active sites,chemical stability, and superior electrical and thermal conductivity. These properties render the 2D ensembles great choices as alternative electrode materials for electrochemical energy storage systems. More recently,recognition of the numerous advantages of these 2D ensemble structures has led to the realization that the performance of certain devices could be significantly enhanced by utilizing three-dimensional(3D) architectures that can furnish an increased number of active sites. The present review summarizes the recent progress in 2D ensemble-based materials for energy storage applications,including supercapacitors, lithium-ion batteries, and sodium-ion batteries. Further, perspectives relating to the challenges and opportunities in this promising research area are discussed.

关键词： 2D nanoflakes Ensembles 3D architectures Supercapacitors lithium-ion batteries Sodium-ion batteries

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uncovering recent progress in nanostructured light-emitters for information and communication technologies

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light(Science & Applications) 2021年第9期10卷 1571-1587页

作者： Frédéric Grillot jianan Duan Bozhang Dong Heming Huang lTCI Institut Polytechnique de ParisTélécom Paris19 place Marguerite Perey91120PalaiseauFrance Center for High Technology Materials University of New-Mexico1313 Goddard St SEAlbuquerqueNM87106USA State Key laboratory on Tunable laser Technology School of Electronic and Information EngineeringHarbin Institute of TechnologyShenzhen518055China

Semiconductor nanostructures with low dimensionality like quantum dots and quantum dashes are one of the best attractive and heuristic solutions for achieving high performance photonic *** one or more spatial dimensions of the nanocrystal approach the de Broglie wavelength,nanoscale size effects create a spatial quantization of carriers leading to a complete discretization of energy levels along with additional quantum phenomena like entangled-photon generation or squeezed states of light among *** article reviews our recent findings and prospects on nanostructure based light emitters where active region is made with quantum-dot and quantum-dash *** applications ranging from silicon-based integrated technologies to quantum information systems rely on the utilization of such laser ***,we link the material and fundamental properties with the device *** this purpose,spectral linewidth,polarization anisotropy,optical nonlinearities as well as microwave,dynamic and nonlinear properties are closely *** paper focuses on photonic devices grown on native substrates(InP and GaAs)as well as those heterogeneously and epitaxially grown on silicon *** research pipelines the most exciting recent innovation developed around light emitters using nanostructures as gain media and highlights the importance of nanotechnologies on industry and society especially for shaping the future information and communication society.

关键词： emitter communication polarization

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Biodegradation of Crystalline Chitin:A Review of Recent Advancement,Challenges,and Future Study Directions

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Journal of Ocean university of China 2024年第5期23卷 1319-1328页

作者： SONG Jianlin Su Haipeng SuN jianan MAO Xiangzhao Sanya Institute of Oceanography Ocean University of ChinaSanya 572000China State Key laboratory of Marine Food Processing and Safety Control College of Food Science and EngineeringOcean University of ChinaQingdao 266404China Qingdao Key laboratory of Food Biotechnology Qingdao 266404China Key laboratory of Biological Processing of Aquatic Products China National Light IndustryQingdao 266404China laboratory for Marine Drugs and Bioproducts of laoshan laboratory Qingdao 266237China

Chitin is the second most abundant renewable polysaccharide on *** degradation of chitin into soluble and bioactive N-acetyl chitooligosaccharides(NCOSs)and N-acetyl-D-glucosamine(GlcNAc)has emerged as a pivotal step in the efficient and sustainable utilization of chitin ***,because of its dense structure,high crystallinity,and poor solubility,chitin typically needs pretreatment via chemical,physical,and other methods before enzymatic conversion to enhance the accessibility between substrates and enzyme ***,there has been considerable interest in exploring the direct biological degradation of crystalline chitin as a cost-effective and environment-friendly *** review endeavors to present several biological methods for the direct degradation of *** primarily focused on the importance of chitinase containing chitin-binding domain(CBD).Additionally,various modification strategies for increasing the degradation efficiency of crystalline chitin were ***,the review systematically elucidated critical components of multi-enzyme catalytic systems,highlighting their potential for chitin ***,the application of microorganisms in the degradation of crystalline chitin was also *** insights in this review contribute to the explorations and investigations of enzymatic and microbial approaches for the direct degradation of crystalline chitin,thereby fostering advancements in biomass conversion.

关键词： crystalline chitin chitinase biological degradation engineering microorganisms

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Defect Engineering on Carbon‑Based Catalysts for Electrocatalytic CO2 Reduction

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Nano-Micro letters 2021年第1期13卷 56-78页

作者： Dongping Xue Huicong Xia Wenfu Yan jianan Zhang Shichun Mu College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001People’s Republic of China State Key laboratory of Inorganic Synthesis and Preparative Chemistry and College of ChemistryJilin University2699 Qianjin StreetChangchun 130012People’s Republic of China State Key laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China

Electrocatalytic carbon dioxide(CO2)reduction(ECR)has become one of the main methods to close the broken carbon cycle and temporarily store renewable energy,but there are still some problems such as poor stability,low activity,and *** the most promising strategy to improve ECR activity is to develop electrocatalysts with low cost,high activity,and long-term ***,defective carbon-based nanomaterials have attracted extensive attention due to the unbalanced electron distribution and electronic structural distortion caused by the defects on the carbon ***,the present review mainly summarizes the latest research progress of the construction of the diverse types of defects(intrinsic carbon defects,heteroatom doping defects,metal atomic sites,and edges detects)for carbon materials in ECR,and unveil the structure-activity relationship and its catalytic *** current challenges and opportunities faced by high-performance carbon materials in ECR are discussed,as well as possible future *** can be believed that this review can provide some inspiration for the future of development of high-performance ECR catalysts.

关键词： Electrocatalytic CO2 reduction Carbon-based nanomaterials Intrinsic defects Heteroatom doping defects Metal atomic sites

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Heat Transfer Enhancement and Vortex Flow Structure in the Spirally Fluted Tubes

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Journal of Thermal Science 2021年第5期30卷 1814-1826页

作者： WANG Xingtian YuCHI Wensi ZHu Junfeng YAO jianan CAO liang State Key laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing 100038China Institute of Water Resources for Pastoral Area Ministry of Water Resources of the People's Republic of ChinaHuhhot 010020China

The turbulence kinetic energy and heat transfer performance of air in spirally fluted tube were numerically studied at a constant wall temperature with Reynolds number(Re)between 5000 and ***,the flow dynamics and heat transfer performance of spirally fluted tubes with five different geometric parameters as well as the effects of separation vortex and swirling wake flow on heat transfer and flow resistance were *** to the results,heat transfer is enhanced mainly because the fluid hit the windward side of the flute,thus generating a strong turbulence kinetic energy to further reconstruct the boundary *** second reason is that the formation of the recirculation zone between the flutes disturbs the boundary layer caused by the flow *** the increase of flute depth ratio(l_(d)/D),the separation vortex will become stronger and larger on the leeward side of *** separation vortex will break the boundary layer and improve the heat transfer capacity which is accompanied with the increase of fluid *** the flute pitch length ratio(l_(p)/D)decreases,the spiral flow is strengthened,and meanwhile more wake flow is *** spiral flow causes little impact on enhancing heat transfer but inhibits the development of the separation vortex and fluid pulsation;in addition,the fluid resistance is reduced at the same *** maximum value of the average Nusselt number appears when Re=5000,l_(d)/D=0.25 and l_(p)/D=1.00,which is 2.53 times the value of smooth *** view of the whole range of Reynolds number,the thermal performance enhancement factor indicates that l_(d)/D=0.15 and l_(p)/D=1.00 are the optimal geometric design parameters.

关键词： Heat transfer enhancement vortex flow resistance spirally fluted tube heat exchanger flue gas heat recovery

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